diff --git a/leapYears/leapYears.js b/leapYears/leapYears.js
index ac786a2..5b16de1 100644
--- a/leapYears/leapYears.js
+++ b/leapYears/leapYears.js
@@ -1,5 +1,13 @@
-const leapYears = function() {
-
+const leapYears = function(date) {
+  if (date % 4 === 0) {
+    if (date % 100 === 0 && date % 400 !== 0) {
+      return false;
+    } else {
+      return true;
+    }
+  } else {
+    return false;
+  }
 }
 
 module.exports = leapYears
diff --git a/leapYears/leapYears.spec.js b/leapYears/leapYears.spec.js
index 0d4d7d4..f4cdea8 100644
--- a/leapYears/leapYears.spec.js
+++ b/leapYears/leapYears.spec.js
@@ -4,19 +4,19 @@ describe('leapYears', function() {
   it('works with non century years', function() {
     expect(leapYears(1996)).toEqual(true);
   });
-  xit('works with non century years', function() {
+  it('works with non century years', function() {
     expect(leapYears(1997)).toEqual(false);
   });
-  xit('works with ridiculously futuristic non century years', function() {
+  it('works with ridiculously futuristic non century years', function() {
     expect(leapYears(34992)).toEqual(true);
   });
-  xit('works with century years', function() {
+  it('works with century years', function() {
     expect(leapYears(1900)).toEqual(false);
   });
-  xit('works with century years', function() {
+  it('works with century years', function() {
     expect(leapYears(1600)).toEqual(true);
   });
-  xit('works with century years', function() {
+  it('works with century years', function() {
     expect(leapYears(700)).toEqual(false);
   });
 });